Can opener



FIG. 1 is a front elevational view of a can opener, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a first side elevational view thereof taken form the left of FIG. 4;

FIG. 6 is a second side elevational view thereof taken from the right of FIG. 5; and,

FIG. 7 is a top side perspective view thereof. 

The ornamental design for a can opener, as shown and described. 